Sleep appliance



FIG. 1 is an offset top frontal view of an sleep appliance.

FIG. 2 is a top view of the sleep appliance of FIG. 1.

FIG. 3 is a bottom view of the sleep appliance of FIG. 1.

FIG. 4 is a front view of the sleep appliance of FIG. 1.

FIG. 5 is a back view of the sleep appliance of FIG. 1.

FIG. 6 is a left side view of the sleep appliance of FIG. 1; and,

FIG. 7 is a right side view of the sleep appliance of FIG. 1.

In the drawings, the broken lines depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a sleep appliance, as shown and described. 